@misc{indiciaeb8765a5fa0cd,
  title = {The American eagles and their economic status, 1964},
  author = {E.R. Kalmbach and Ralph H. Imler and Lee W. Arnold},
  year = {1966},
  url = {https://pubs.usgs.gov/publication/rp28},
  note = {Source identifier: rp28}
}